ELNA 745 User manual

Page is loading ...

6

TABLE OF CONTENTS

SECTION I

Machine Parts

Front View .................................................. 10

Side Cover.................................................. 12

Front Cover................................................. 12

Standard Accessories................................. 14

SECTION II

Machine Set-up

Attaching the Antenna ................................ 16

Placing the Foam Pads............................... 16

Connecting Machine to Power Supply........ 18

How To Set Up Machine Using the

Program Display Panel .................... 20-34

What the Symbols Represent ................ 22-34

Needles ...................................................... 34

Tilting Needle Clamp .................................. 36

SECTION III

Threading

Antenna ...................................................... 38

Accessories For Decorative Threads.......... 40

Tension Release Clips................................ 40

Snap-on Thread Guide ............................... 40

Quick Reference Threading Charts ....... 42-58

How to Use Automatic Needle Threader .... 60

Tension Release Lever............................... 60

Detailed Thread Route Charts ............... 62-71

SECTION IV

Test Sewing

Setting Foot Pressure................................. 72

Controlling Sewing Speed .......................... 72

Waste Tray ................................................. 72

Safety Systems........................................... 74

Starting to Sew ........................................... 76

Back-Tack Device....................................... 78

Inserting Overlock Chain-off Threads at

End of Seam ......................................... 80

SECTION V

Adjustments

Thread Tension........................................... 82

Balanced Tension.................................. 82-86

Differential Feed.......................................... 88

Stitch Length ............................................... 90

Cutting Width .............................................. 90

Sewing Overlock Stitches on Extra

Heavyweight Fabrics............................. 92

SECTION VI

Sewing Techniques

Overlocking Outside Corners ...................... 94

Overlocking Inside Corners......................... 94

Sewing Curved Edges ................................ 94

Removing Stitches from Fabric................... 96

Chainstitch – Turning Corners .................... 96

Quilting Guide ............................................. 96

Cover Hem.................................................. 98

Turning Corners ........................................ 100

Triple Cover Hem – Topstitching an

Overlock Seam.................................... 102

SECTION VII

Maintenance

Cleaning and Oiling................................... 104

Replacing the Movable Cutting Blade ....... 106

Replacing the Light Bulb ........................... 106

OPTIONAL ACCESSORIES

............... 108

TROUBLESHOOTING ................ 109

INDEX..........................................113

RECYCLING REGULATIONS...... 117

NOTE: Information found in this instruction

manual is current at the time of printing. We

reserve the right to change and update

specifications and information as needed.

Page is loading ...

10

SECTION I

Machine Parts

Front View

1. Pressure adjustment dial

2. Tension release lever

3. Left needle thread tension (blue)

4. Right needle thread tension (red)

5. Upper looper thread tension (yellow)

6. Lower looper thread tension (green)

7. Spool pin

8. Spool holder

9. Spool pin base

10. Foot control plug

11. Power switch On/Off

12. Flywheel

13. Front cover

14. Side cover

15. Cutting width window

16. Differential feed dial

17. Stitch length dial

18. Program display panel

19. Program selection dial

Page is loading ...

12

Side Cover

Grasp the cover and open it to the

left.

1. Presser foot lever and thread

cutter

2. Needle clamp safety lever

3. Needle clamp

4. Needle(s)

5. Presser foot

6. Needle plate

7. Needle plate release lever

8. Cutting width dial

9. Movable cutting blade release

knob

10. Accessory holder area

Front Cover

Pull the cover to the right and open it

towards you.

11. Needle clamp release button (red)

12. 2 thread converter

13. Upper looper

14. Lower looper

15. Chain looper

16. Movable cutting blade

17. Fixed blade

18. Back-tack device

19. Stitch width finger lever

Page is loading ...

14

Standard Accessories

Accessory Box

1. Spool caps

2. Cleaning brush

3. Oil tube

4. Clear foot F

5. Snap-on thread guide

6. Tension release clip

7. Spare movable cutting blade

8. Wrench for replacing movable

cutting blade

9. Quilting guide

10. Needle threader

Side Cover

1. Tweezers

2. Allen screwdriver 1.5 mm

3. Assortment of needles EL x 705

Machine Box

1. Dust cover

2. Spool holders

3. Foam pads

4. Sewing table

5. Waste tray

6. Antenna

7. Foot control

Page is loading ...

16

SECTION II

Machine Set-up

Attaching the Antenna

1. Insert the antenna pole into the

spool pin base located at the

back of the machine. Make sure

the socket is correctly inserted

into the slot.

2. Pull the antenna pole to its

highest position. Align the thread

guide portion with the spool pins

(clicks).

Placing the Foam Pads

Remove the spool holders and

place the foam pads. The foam

pads help stabilize the thread

spools.

Both domestic and industrial

type thread spools can be used.

1. Industrial type spools

For industrial type spools, use the

spool holders. Make sure that the

spools touch the bottom.

2. Domestic type spools

For domestic type spools, use the

spool caps only.

3. Decorative type spools

(specialty threads)

Place the spool directly on the

foam pad to prevent the thread

from slipping underneath the

spool.

1

2

1

2

3

Page is loading ...

18

Connecting Machine to Power Supply

The power switch should be off. Before

connecting the power cord/foot control, make

sure the voltage and frequency shown on the

machine are identical to your electrical power.

Insert the machine/foot control plug into the

machine and the power supply plug into the

wall.

For Your Safety

1. While the machine is in operation, always

keep your eye on the sewing area and do

not touch any moving parts – needle(s),

flywheel, movable cutting blade, loopers,

etc.

2. Always switch off the power switch and

unplug from the power supply:

•

when leaving the machine unattended

•

when attaching or removing parts

•

when cleaning the machine.

3. Do not place anything on the foot control.

Page is loading ...

20

How To Set Up Machine Using the

Program Display Panel

Turn the program selection dial and change

readout in SELECT window to program 2.

NOTE: Machine should not

be threaded

before program set-up occurs. Cut and

remove all threads.

HINT: Cut thread at looper and needle eyes

and hand pull thread away.

IMPORTANT: Never press on foot control

to sew out thread.

A.

Program display

B.

Program selection dial

C.

Program number

D.

Differential feed ratio

E.

Stitch length in mm

F.

Needle position

G.

Cutting width dial position

H.

Position of movable cutting blade

I.

2 thread converter - up/down

J.

Overlock cover or sewing table

K.

Foot lever position

L.

Position of instant rolled hem device

(stitch width finger lever)

M.

Thread chain looper tension (brown)

Page is loading ...

22

A. Program Name

Look at the program display and locate

the name of the stitch you wish to sew. To

the left of the stitch name is a

corresponding program number.

NOTE: Some program numbers

correspond to more than one stitch name.

Example:

• Program 2 corresponds to three

stitches – 5 Thread, 3 Thread Wide

and Overlock 3.

• Program 10 corresponds to four

stitches – Triple Cover Hem, Cover

Hem Wide, Cover Hem Narrow and

Chainstitch.

B. Program Selection Dial

Move the program selection dial until the

desired stitch program number is shown

in the program display.

What the Symbols Represent

We recommend reading symbols from left to

right.

Page is loading ...

24

C.

Program Number

The program display automatically sets

the thread tensions for the selected

program number shown. In addition,

instructions for machine set-up are

displayed using easy to read symbols.

NOTE: It is very important to have the

SELECT number in the display panel

correspond to the desired stitch. We

recommend physically setting-up the

machine before attempting to thread. This

ensures that all machine parts are

correctly positioned and makes threading

easier.

D. DF = Differential Feed

Move the DF dial until the setting mark is

aligned with the number shown in the

display panel. Differential feed may be set

from 0.5 to 2.

Example:

Move DF dial to 1 setting.

E.

SL = Stitch Length

Move the SL dial until the setting mark is

aligned with the number shown in the

display panel. Stitch length may be set

from 0.5 to 5.

Example:

• 5 Thread and 3 Thread Wide – move

SL dial to 3 setting.

• Overlock 3 – move SL dial to marked

line located between 2 and 3 for the

2.5 setting.

Page is loading ...

26

F.

Needle Position

There are 5 needle positions available to

sew the 17 stitches. A colored dot

corresponding to the color of the stitch

name appears above L0, L1, L2, R1 or R2

to indicate which position(s) will require a

needle. Insert a needle into the proper

needle position. (See page 36 for

operating tilting needle clamp.)

Example:

• Yellow dots = 5 Thread

Insert a needle in position R1 and R2.

• Blue dot = 3 Thread Wide

Insert a needle in position R1.

• Red dot = Overlock 3

Insert a needle in position R1.

IMPORTANT: Switch off the machine

when inserting needles.

G. Set Cutting Width Dial

The cutting width dial sets the distance

between the needle and where the blades

cut. Turn the dial until the readout on the

display panel is visible in the side door

window.

Example:

• Blue N = 5 Thread and 3 Thread

Wide – move cutting width dial to N

setting.

• Red 1 = Overlock 3 – move cutting

width dial to 1 setting.

HINT: Open left side cover to fully expose

cutting width dial to more easily turn dial

for wider widths.

IMPORTANT: Never move cutting width

dial if threads are forming a stitch around

the instant rolled hem device (stitch width

finger). Remove threads by raising

presser foot and gently pulling them to the

back.

Page is loading ...

28

H. Movable Cutting Blade Position

To Disengage Movable Cutting Blade

(down)

Hand turn the flywheel to bring needle bar

to its highest position. Open front and side

covers. Push movable cutting blade

release knob to the right and turn it

towards you.

NOTE: Do not allow the fabric to be sewn

beyond the right side of the needle plate

when sewing any overlock stitch.

(Example: any stitch that uses either R1

or R2 needle position.)

To Engage Movable Cutting Blade (up)

Push movable cutting blade release knob

to the right and turn it away from you.

Example:

5 Thread, 3 Thread Wide and Overlock 3

– engage movable cutting blade (up).

I.

2 Thread Converter

To Engage 2 Thread Converter

Hand turn the flywheel until the upper

looper is in an up position. (HINT: Align

the arrows on the flywheel.)

Lower converter and insert hook into

upper looper.

To Disengage 2 Thread Converter

Hand turn the flywheel until upper

looper is in an up position.

Pull out hook from looper eye and lift

converter up until it secures in far right

position.

Example:

5 Thread, 3 Thread Wide and Overlock 3

– disengage 2 thread converter.

Page is loading ...

30

J. Overlock Cover or Sewing Table

Program numbers 1-9 will always have

the overlock cover attached to the front

cover.

Attach Overlock Cover

The overlock cover protects the loopers.

To attach the overlock cover, slide base

onto front cover and “snap” it into place.

Program number 10 will always have the

sewing table attached to the front cover.

Attach Sewing Table

Detach overlock cover by grasping the tab

with your thumb and index finger. Pull the

tab up slightly and towards you.

NOTE: The movable cutting blade and

stitch width finger will always be

disengaged when the sewing table is

attached.

To install the sewing table, slide table

onto front cover with the tab and notch

fitting snugly into place.

Page is loading ...

32

K. Presser Foot (A or B)

Switch the lever on the presser foot to A or

B. The lever controls the spring action that

occurs on the underside of the foot.

The tip of the foot has markings that line

up with the insertion point of the needles -

a great guide for accurate sewing.

Example:

• Yellow A - 5 Thread: position A

• Blue B - 3 Thread Wide and Overlock

3: position B.

L. Instant Rolled Hem Device

(Stitch Width Finger)

Your machine comes equipped with the

rolled hem plate. You can do all overlock

stitches by engaging or disengaging the

stitch width finger.

To Engage (up)

Pull the stitch width finger lever up.

To Disengage (down)

Push the stitch width finger lever down.

Page is loading ...

34

M. Thread Chain Looper Tension (Brown)

Thread the chain looper tension for either

5 thread stitch or after selecting any stitch

in program 10.

Example:

• Yellow N – 5 Thread: thread chain

looper.

• Empty space – 3 Thread Wide and

Overlock 3: do not thread chain

looper.

Needles

The machine is supplied with Schmetz brand

EL x 705 needles. This is an industrial type

needle that ensures proper stitch formation at

high speeds. The scarf (cut out groove on

needle back) is important because it allows

the looper to come near the needle to catch

the thread and form a stitch. EL x 705 needles

are available in two sizes – 80/12 and 90/14.

It is possible to use conventional sewing

machine needles – 130/705H – for special

threads and fabrics.

Common stitch problems can often be traced

directly to the needle.

• Needle inserted incorrectly. (Flat side

should be to the back.)

• Needle not pushed up high enough into

position. (See page 36.)

• Needle is dull or has burrs. (Change

needles frequently; even new needles can

have imperfections.)

Page is loading ...

36

Tilting Needle Clamp

1. The needle clamp can be tilted up to

ensure easy needle placement. Hand turn

the flywheel towards you to move needle

clamp/upper looper. Align triangle mark

“a” with “b”. Lower the presser foot.

2. Before attempting to tilt the needle clamp,

make sure the needle clamp is up and the

upper looper is not in front of any needle

position.

3. Swing the needle clamp safety lever down

to the right.

4. Press the needle clamp release button

(red) while tilting the clamp towards you.

5. Each needle position has a set screw.

Use the allen screwdriver to loosen the

set screw. Insert needle(s) with flat side to

the back into new position(s).

6. Tighten set screw.

NOTE: Needles will always sit unevenly.

If needles are even, loosen set screws

and reinsert needles.

7. Tilt down the needle clamp and put the

needle clamp safety lever back in

position.

NOTE: After moving needles, always

hand turn the flywheel to test that needles

will pass through the needle plate.

Page is loading ...

38

SECTION III

Threading

The threading routes will change

according to the selected program.

As you learn to thread your machine, we

recommend using the thread colors that are

shown on the tension dials. This will help you

understand the function of each thread.

Programs are based on sewer using polyester

or a polyester/cotton blend of thread for all

threading positions. Choose a brand of thread

that is even and consistent with no thick and

thin areas.

NOTE: The speed of the machine and the

stitch formation stretches the thread as it

passes through the tension discs and thread

guides. Therefore, it is important that the

thread is polyester or a polyester/cotton blend.

A 100% cotton thread is too weak and will

result in threads breaking.

IMPORTANT: Locate the threading diagram

for the stitch, study the threading guides

carefully and use each guide indicated. The

machine must be threaded in the correct

sequence. Follow the sequence shown on the

Quick Reference Threading Charts. (See

pages 42-60.)

Antenna

Extend the antenna pole to its highest position.

(See page 16.)

When threading the antenna thread guide, it is

proper to use either the slot or the hole. The

hole is the recommended method especially

when sewing with decorative threads.

1 Slot

2 Hole

Some tightly twisted threads need special

threading through both the hole and slot.

Page is loading ...

40

A

fter threading the antenna, slip the thread into

the first guide on the machine as shown.

Accessories For Decorative Threads

There are many decorative threads available

for overlock use. Make sure you choose

threads and yarns that smoothly move

through the looper or needle. Never use a

thread that breaks easily if you pull on it. Do

not use fuzzy (ex. mohair yarn) or uneven

threads that can catch on thread guides.

Tension Release Clips

Place the tension release clip into any thread

guide that is using a decorative thread.

Snap-on Thread Guide

Decorative threads may tangle. Snap the

thread guide onto the antenna and place

upper looper thread as shown.

IMPORTANT: When using decorative

threads, sew at a slower, consistent speed to

prevent uneven stitches.

Page is loading ...

42

Quick Reference Threading Charts

Should you need a closer view of the individual threading pathways, refer

to the detailed thread route charts indicated by letter (A), (B3), etc.

(See pages 62-71.)

SAFETY 4 THREAD

Select 1 and set up machine.

A 3-thread overlock stitch that adds a second

needle thread. The stitch stretches without

breaking. The second needle thread

reinforces the durability and strength of the

stitch, but the stitch retains its elasticity.

Common Uses

• Excellent for sewing knit garments.

• Appropriate for loose fitting woven

garments.

Thread in the following sequence:

1

yellow thread for upper looper (F)

2

green thread for lower looper (G)

3

blue thread for R1 needle (B2)

4

red thread for R2 needle (D3)

Page is loading ...

44

STRETCH KNIT

Select 1 and set up machine.

The same characteristics as the Safety 4

Thread. The Stretch Knit program uses the

differential feed and stitch length settings to

prevent knitwear from stretching while sewing.

Common Uses

• Apply ribbing to knit necklines, cuffs or

waistbands.

• Construction method for sweater knits.

Thread in the following sequence:

1

yellow thread for upper looper (F)

2

green thread for lower looper (G)

3

blue thread for R1 needle (B2)

4

red thread for R2 needle (D3)

5 THREAD

Select 2 and set up machine.

A true 5 thread industrial stitch consists of two

stitches sewn simultaneously. 2 threads form

the chainstitch and 3 threads form the

overlock. It is found on medium to

heavyweight woven fabrics.

Common Uses

• Perfect for garment construction on

woven fabrics.

• Excellent for drapes; stabilizes long

seams where there is excess weight.

Thread in the following sequence:

1

yellow thread for upper looper (F)

2

green thread for lower looper (G)

3

brown thread for chain looper (H)

4

blue thread for L2 needle (A)

5

red thread for R1 needle (D2)

Page is loading ...

46

3 THREAD WIDE

Select 2 and set up machine.

Three threads lock together on the fabric edge

forming a balanced stitch. The overlock stitch

is suitable for medium to heavyweight fabrics.

Common Uses

• Construction method for knitwear.

• Edge finish on single layer of fabric.

Thread in the following sequence:

1

yellow thread for upper looper (F)

2

green thread for lower looper (G)

3

red thread for R1 needle (D2)

OVERLOCK 3

Select 2 and set up machine.

The same characteristics as the 3 Thread

Wide. This narrower version is suitable for

light to medium weight fabrics.

Common Uses

• Construction method for lingerie.

• Edge finish on single layer of fabric.

Thread in the following sequence:

1

yellow thread for upper looper (F)

2

green thread for lower looper (G)

3

red thread for R1 needle (D2)

Page is loading ...

ELNA 745 User manual

This manual is also suitable for

ELNA 745 User manual

in other languages

Related papers

Other documents